Spatial calibration of surround sound systems including listener position estimation
First Claim
1. A method for calibrating a multichannel surround sound system including a soundbar and one or more surround loudspeakers, the method comprising:
- receiving, by microphone array integrated into the soundbar, a test signal played at a surround loudspeaker to be calibrated, the integrated microphone array comprising a plurality of microphones mounted in a relationship to the soundbar;
estimating a position of the surround loudspeaker relative to the integrated microphone array based on the received test signal at the plurality of microphones;
receiving, by the microphone array, a sound from a listener;
estimating a position of the listener relative to the integrated microphone array based on the received sound at the plurality of microphones;
deriving a distance and an angle between the surround loudspeaker and the listener based on the estimated position of the surround loudspeaker relative to the integrated microphone array and the estimated position of the listener relative to the integrated microphone array; and
performing a spatial calibration to the surround sound system based at least on the derived distance and angle between the surround loudspeaker and the listener.
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Abstract
A method for calibrating a surround sound system is disclosed. The method utilizes a microphone array integrated in a front center loudspeaker of the surround sound system or a soundbar facing a listener. Positions of each loudspeaker relative to the microphone array can be estimated by playing a test signal at each loudspeaker and measuring the test signal received at the microphone array. The listener'"'"'s position can also be estimated by receiving the listener'"'"'s voice or other sound cues made by the listener using the microphone array. Once the positions of the loudspeakers and the listener'"'"'s position are estimated, spatial calibrations can be performed for each loudspeaker in the surround sound system so that listening experience is optimized.
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Citations
20 Claims
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1. A method for calibrating a multichannel surround sound system including a soundbar and one or more surround loudspeakers, the method comprising:
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receiving, by microphone array integrated into the soundbar, a test signal played at a surround loudspeaker to be calibrated, the integrated microphone array comprising a plurality of microphones mounted in a relationship to the soundbar; estimating a position of the surround loudspeaker relative to the integrated microphone array based on the received test signal at the plurality of microphones; receiving, by the microphone array, a sound from a listener; estimating a position of the listener relative to the integrated microphone array based on the received sound at the plurality of microphones; deriving a distance and an angle between the surround loudspeaker and the listener based on the estimated position of the surround loudspeaker relative to the integrated microphone array and the estimated position of the listener relative to the integrated microphone array; and performing a spatial calibration to the surround sound system based at least on the derived distance and angle between the surround loudspeaker and the listener. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method comprising:
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receiving a request to calibrate a multichannel surround sound system including a soundbar with an integrated microphone array and one or more surround loudspeakers; responsive to the request including estimating a position of a surround loudspeaker, playing a test signal at the surround loudspeaker; and estimating the position of the surround loudspeaker relative to the integrated microphone array based on received test signal from the surround loudspeaker at the integrated microphone array; responsive to the request including estimating a position of a listener, estimating the position of the listener relative to the integrated microphone array based on a received sound from the listener at the integrated microphone array; deriving a distance and an angle between the surround loudspeaker and the listener based on the estimated position of the surround loudspeaker relative to the integrated microphone array and the estimated position of the listener relative to the integrated microphone array; and performing a spatial calibration to the surround sound system based at least on the derived distance and angle between the surround loudspeaker and the listener.
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11. An apparatus for calibrating a multichannel surround sound system including one or more loudspeakers, the apparatus comprising:
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a microphone array with two or more microphones integrated in a front component of the surround sound system, wherein the integrated microphone array is configured for receiving a test signal played at a loudspeaker to be calibrated, and for receiving a sound from the listener; an estimation module configured for; estimating a position of the loudspeaker relative to the integrated microphone array based on the received test signal from the loudspeaker, and for estimating a position of the listener relative to the integrated microphone array based on the received sound from the listener; and deriving a distance and an angle between the surround loudspeaker and the listener based on the estimated position of the surround loudspeaker relative to the integrated microphone array and the estimated position of the listener relative to the integrated microphone array; and a calibration module configured for performing a spatial calibration to the surround sound system based at least on the derived distance and angle between the surround loudspeaker and the listener. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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19. A system for calibrating a multichannel surround sound system including one or more loudspeakers, the system comprising:
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a microphone array with two or more microphones integrated in a front component of the surround sound system, wherein the microphone array is configured for receiving a test signal played at a loudspeaker to be calibrated and for receiving a sound from the listener; an estimation module configured for; estimating a position of the loudspeaker relative to the integrated microphone array based on the received test signal from the loudspeaker, and for estimating a position of the listener relative to the integrated microphone array based on the received sound from the listener; and deriving a distance and an angle between the surround loudspeaker and the listener based on the estimated position of the surround loudspeaker relative to the integrated microphone array and the estimated position of the listener relative to the integrated microphone array; and a calibration module configured for performing a spatial calibration to the surround sound system based at least on the derived distance and angle between the surround loudspeaker and the listener. - View Dependent Claims (20)
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Specification